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Emerson Repulsion Start Induction Run AC Motor


The Emerson 1901 ½ HP Single Phase AC motor.


The repulsion-start induction-run motor, starts as a repulsion motor and runs as an Induction motor.  The advantage of this starting scheme provided greater starting torque than a split phase motor could provide.  The repulsion start motor rotor is wound similar to a direct current armature.  The stator is energized creating an alternating magnetic field that runs through the rotor and induces a current in the rotor windings.  The commutator brushes are short-circuited, and the currents induced in the armature coils set up poles on the armature surface.  The brushes are set so that the poles are slightly out of line with the stator poles, and the mutual repulsion between like poles on the stator and armature produces the torque.  For more views of the motor and and a description of the starting sequence please watch our video on our video page or on you tube.

View our video on you tube.

 

 

Categories: Motors Collection
Tags: Motors

Author: ephf

Edmonton Power Historical Foundation is a non-profit society dedicated to preserving the history of electric power in the City of Edmonton and the Province of Alberta, for the education and entertainment of current and future generations.

Edmonton Power Historical Foundation

Hours of operation 2023

We are located on the grounds of the Leduc West Antique Museum. Travel 5 miles west of Leduc on Highway 39. Go north on Range Road 260 (Cohne Dale Road) for about a mile and the museum will be on your right. The museum is closed for the winter, however we are looking forward to opening our doors on May 27 for the Leduc West Antique Society Spring Swap Meet, Tractor Pull & Music Series. Featured will be all manner of vendor tables, displays, tours, and the first Tractor Pull of the season. In the evening the first concert of the Music Series will feature "Prairie Sky" on stage.
July 22 & 23 is theLWAS Annual Exposition, the biggest event of the year which will include public tours, exhibits, a parade of antique vehicles, and a Tractor Pull; on Saturday evening the Music Series will feature "The Jivin' Belles" performing songs heavily influenced by close harmony groups of the 40's like the Andrews Sisters.
September 9 & 10, the final event of the summer season is the Fall Harvest event… with public tours, exhibits and the Tractor Pull Provincial Finals event. The final music performance of the season will feature “Celtera” and as their name implies is steeped in the music from the Emerald Isle and Scotland.

 

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